Fuse-plug.



A. WEBER; Jn.

FUSE PLUG. APPLIOATION FILED JAN. 16, 1909.

5 39. Patented June 22, 1909.

' WITNE'EIEEE] INVENfi-UR @MM W 2 SHEETS-SHEET 1.

A. WEBER, JR. FUSE PLUG.

APlfI-IOATION FILED JAN. 16, 1909.

925,539 Patented June 22,1909.

2 SHEETS-SHEET 2 M/fiNEESEE I I T1216 I INVENTUR v LBOMMJ' 'AUGUSTWEBER, JR, OF SCHENECTADY, NEW

FUSE-PLUG.

Specification of Letters Patent.

l atented June 22, 1909.

Application filed. January 16, race. Serial No.

To all whom inay concern:

B e' 1 known that I, Aueusr WEBER, Jr., a. cltlzen of the United States,residing at I Schenectady, county of Schenectady, and

Statdof New York, have invented certain new and useful Improvements inFuse-Plugs,

ol which the followi'ng is a'specification.

The invention relates to such improvemerits and borisists oi the novelconstruction,

and combination of parts hereinafter dc,-

scribed and subsequently claimed.

Reference may be had to the accompanying drawings, and the referencecharacters fmal'ked thereon, which form a part of this specification. A

Similar characters refer to similar the. several figures therein.

Figure 1 otthe drawings is atop plan view of the base of my improvedfuse-plug. Fig,

2 is a bottom plan view of the same. 3

parts in is a View in side elevation of the same. Fig. 41s a central,vertical section of thesame taken ontliebroken line 44 in Fig. 1. Flg. 5is a central, vertical section of the same taken on the broken line 55in Fig. 1.

Fig. 6 is a sectional View similar to. Fig. 5,

showinglthefuseplug complete. Fig. 7 is a sectionaljwiew similar toFig.4, showing the fuse-plug complete. Fig. 8 is a horizontal sectionofthe plug taken on \the broken line 88 in Fig. 7, viewed in the directionof the Fig. 9 is a bottom plan view of the. cap detached, Fig. 10 isaview in side elevation of the same' Fig. 11 is a central, verticalsection of the same taken on the broken line 11-11 in Fig. 9. i

' The invention relates to cap-covered fuseplugs having provisionfforthe escape of gases under pressure, due to the destruction of the fuseby an excessive current.

Theprincipal object of the present invention is to cause 'the escapinggases to traverse a more direct or devious route in escaping from theinterior of the plug.

Other objects of the invention will appear connection with the followingdescription. Referring to the drawings, wherein the invention is shownin its referred form, the

o low base, 1, of inclosed y a cap, 2, an exterior contact-member, 3, onits inner end, an inclosing screwshell, 4, adapted to connectwith asuitable socket, and to form the other contact-mam her, and an inclosedl'use, 5, conn: tir said -.aonta( :t-members. The hollow ha..-e i..-prefthe tongue, 16, v;

thereof form harrie erably made of dieanolded )orcelain of en eralcylindrical i'orm, and has extending transversely of its interior apartition, 6, extending from the inner end of the plugpartway to theouter open end thereof, whereby the inner end of the plug is dividedintotwo chambers or pockets. The fuse, 5, extends over the partition, s,and is soldered or otherwise secured at one end to thesplit end of apost, 10, which projects from. the exterior contact mernlmr, 3, throughan aperture, 8, interioriy of the pi and at its other end to .ch anintegral part of the screw-shell, i, projecting through an aperture, 7,in. the wall of the base of the plug. The shell, 1, is adapted toreceivethe inner end of the base, upon which it is secured by introvertlng sideportions, 12, of the shell into side recesses, 12), formed in theexterior of the base. i

The base is provided with a pair of ventilating apertures, 20, whichextend longitudinally through the wall of the base, and open exteriorlythereof adjacent to the respective recesses, 13. These ventilatingapertures also form openings in the outer end-face of the .base, Wherethey communicate with the re- 20, to a considerable distance from saidventilating apertures, the ends of said grooves remote from therespective ventilating apertures communicating with the interior of thebase at, The grooves, 21, are formed between a peripheral annularflange, 23, on the outer end ofthe base, ano segmental flanges 24, alsoformed on the outer and of the base, which segmental flanges orcontinuations 1 rior of the base and the respective ventilatingapertures, 20, where the same form openings in the outer end of thebase. The cap, 2, is adapted to cover the grooves, 21, and to co-(werate with the respectivebarriers, 25, to .3 i grooves to the interiorof the base at points opposite the respective ventilating apertures 20.The cap, 2, comprises in. part a disk of mica, 29, which extends acrossa central aperture, 28, in the end wall of the cap. The body of the capis preferably formed of sheet-metal, and adapted to be secured upon theouter end'of the base by introverting side portions, 30, of thecap-flange intoside recesses, 3 l, formed in the exterior of the basenear its outer end.

25, between the inte'- are forced into the respective recesse niately atthe middle or To facilitate the introversion o ortions, 30, of the capl'lange, Sli formed in said flange extending an tially thereof at pointsopposite the no, tivs r cesses, 31, and portions of said ii extendingfrom the edge thereof to said slits hove deportion of the molten metal Imelting oi the to v on roL L a; ventilating apertures, bile lrec escapeis provided. for the heated prcdu by the melting of the What I claiin asnew and desire to secure by Letters Patent is-- 1. A base oi iusulzding11') ruseplugs provided in. its enter em with a ventilating grooveeornnnu'i interior of ie base aperture amending dinally throng v openingexterior-1v the rier formed by a wall of said groove ing aperture 'libase of" plugs havin on 1 oated annular cated segm ntal i annular llieating at the or i i with the inter-1o i i cl ase, provided with aventilating 111g ,l'lOlll said groove at longitudinally tlirou h D andopening exteri 3. A base oi insulating material for plugs having on itsouter end an e located annular :ilan e and .ddlz

1 1: I, l rioriy located segmental dang respectively, from said annulargrooves in the outer thereof.

i. In a device of the class described, the

combination with a base of insulating material provided in' its outerend-surface with a ventilating groove communicating with the interior ofthe base, and with a ventilating ape 'e extending from said groovelongiiuiy through the wall of the base, and open 1g eXte-riorly thereof,and having a bari formed by a continuation of the inner i. all of saidgroove, separating said ventilating aperture from the interior of thebase; of a cap attached to the outer end of said base, and cooperatingwith said barrier to close said groove to the interior of. the base, ata point opposite, said ventilating aperture 5. .ln fuse-plug, thecombination with a base of insulating material having an intericil rlocated partition, and provided in its ouh end-surface with aventilatinggroove mmunicating with the interior of the base, Y .h a ventilatingaperture extending .i said groove longitudinally through the of thebase, and opening exte'riorly not, and having abarriei' formed by anustion of the innerwall of said groove, lar ting said ventilatingaperture from the of the base of a pair of exterior conienibers attachedto said base, and

res in said base, interiorly thereof, on c ip-Jade sides or saidpartition; a fuse ex- 1 tending over said partition and connected at iits ends to said respective terminals and :1.

attached to the outer end'of said base, cooperating with said barrier toclose groove to the interior of the base, at a t opposite saidventilating aperturo.

i testimony whereof, I have hereunto set i my hand this 11th dav ofJanuary, 1909.

AUGUST WE1ER,'J1=.

us: i Y

1' C LAwsox,

AEEL- l1. MALLoRL terminals extending through suitable'

